CN110488125B - Method and system for realizing active early warning processing based on state information quantity of circuit breaker - Google Patents
Method and system for realizing active early warning processing based on state information quantity of circuit breaker Download PDFInfo
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- 238000005728 strengthening Methods 0.000 claims description 42
- 230000007547 defect Effects 0.000 claims description 27
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- 230000001502 supplementing effect Effects 0.000 claims description 25
- 238000012544 monitoring process Methods 0.000 claims description 24
- 230000008859 change Effects 0.000 claims description 18
- 238000009422 external insulation Methods 0.000 claims description 14
- 238000004140 cleaning Methods 0.000 claims description 7
- 230000002708 enhancing effect Effects 0.000 claims description 7
- 238000013021 overheating Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 5
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- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
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Abstract
The invention relates to a method for realizing active early warning processing based on state information quantity of a circuit breaker, which comprises the following steps: acquiring state information quantity through various information representing the circuit breaker, and forming a state information base; judging whether the state information quantity exceeds the early warning rule required value of the single state quantity, if so, sending out a red early warning by the system; otherwise, judging whether the state information quantity exceeds the early warning rule required value of the multi-state comprehensive quantity, and if so, performing corresponding multi-state quantity early warning processing according to the state information quantity; otherwise, the system is in a normal state. The invention also relates to a system for realizing the active early warning function based on the state information quantity of the circuit breaker. By adopting the method and the system for realizing the active early warning processing based on the state information quantity of the circuit breaker, the operating state of the circuit breaker equipment is evaluated by utilizing the circuit breaker active early warning algorithm integrating the single state quantity and the integrated state quantity, and the health level of the equipment is improved.
Description
Technical Field
The invention relates to the field of transformer substation operation and inspection, in particular to the field of transformer substation intelligent early warning, and specifically relates to a method and a system for realizing active early warning processing based on state information quantity of a circuit breaker.
Background
In the last decade, the scale of the substation equipment is increased by 82%, and the existing substation main equipment and various auxiliary equipment monitoring systems are independent, have dispersed interfaces, incomplete equipment coverage and incomplete information uploading, so that the main and auxiliary equipment information cannot be effectively shared, and the substation operation and maintenance personnel lack an effective monitoring means for the managed equipment; the equipment operation data acquired by various monitoring means cannot be effectively utilized, and accurate diagnosis and active early warning of the health state of the equipment cannot be realized.
Therefore, it is urgently needed to use a cloud moving technology as a support, automatically judge the types and positions of defects and faults by researching an early warning signal, a defect information and fault information automatic screening and identifying technology, and formulate a corresponding control processing strategy, so that a traditional equipment management mode mainly comprising routine power failure tests and after-event diagnosis processing is changed into an active early warning mode mainly comprising equipment internal state self-perception, state intelligent diagnosis, trend automatic tracking and abnormal advanced warning. And the abnormity of the equipment is found and treated in advance, and the safety level of the power grid and the equipment is improved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a method and a system for realizing active early warning processing based on the state information quantity of a circuit breaker, which have the advantages of high accuracy, high efficiency and wide application range.
In order to achieve the above object, the method and system for implementing active early warning processing based on the state information quantity of the circuit breaker of the present invention are as follows:
the method for realizing active early warning processing based on the state information quantity of the circuit breaker is mainly characterized in that the early warning levels are red early warning, yellow early warning and blue early warning in sequence from large to small according to the severity and the emergency degree of the influence on the safe operation of equipment, and the method comprises the following steps:
(1) acquiring state information quantity through various information representing the circuit breaker, and forming a state information base;
(2) judging whether the state information quantity exceeds the early warning rule required value of the single state quantity, if so, sending out a red early warning by the system; otherwise, continuing the step (3);
(3) judging whether the state information quantity exceeds the early warning rule requirement value of the multi-state comprehensive quantity, if so, performing corresponding multi-state quantity early warning processing according to the state information quantity; otherwise, the system is in a normal state.
Preferably, the state information includes a hot spot temperature, an ambient temperature, a normal heating temperature, an interphase temperature difference, and a relative temperature difference, and the multi-state warning processing in step (3) includes processing of an overheating defect warning policy, including the following steps:
(3-1.1) judging whether the temperature of the hot spot is not less than 110 ℃, if so, giving a red early warning, stopping power for maintenance as soon as possible, and strengthening routing inspection before power failure; otherwise, continuing the step (3-1.2);
(3-1.2) judging whether the hot spot temperature is higher than 80 ℃, and if so, performing early warning treatment according to the auxiliary state quantity environment temperature, the normal heating temperature and the relative temperature difference; otherwise, early warning processing is carried out according to the auxiliary state quantity environment temperature, the normal heating temperature, the temperature difference and the relative temperature difference.
Preferably, the early warning processing is performed in the step (3-1.2) according to the auxiliary state quantity environment temperature, the normal heating temperature and the relative temperature difference, and the method specifically comprises the following steps:
(3-1.2.1a) judging whether the relative temperature difference is not less than 95%, if so, giving a red early warning, stopping power for maintenance as soon as possible, and strengthening inspection before power failure; otherwise, a yellow early warning is sent out, and the tracking and the inspection enhancement are continuously carried out.
Preferably, the step (3-1.2) of performing early warning processing according to the auxiliary state quantity environment temperature, the normal heating temperature, the temperature difference and the relative temperature difference specifically comprises the following steps:
(3-1.2.1b) judging whether the relative temperature difference is not less than 95%, if so, giving a red early warning, stopping power for maintenance as soon as possible, and strengthening inspection before power failure; otherwise, continuing the step (3-1.2.2 b);
(3-1.2.2b) judging whether the relative temperature difference is not less than 80%, if so, sending out yellow early warning, continuously tracking and enhancing inspection; otherwise, a blue early warning is sent out, and the hot spot temperature change trend is continuously tracked and noted.
Preferably, the state information includes SF6 gas density, gas leakage condition and annual gas supply frequency, and the multi-state quantity early warning processing in step (3) includes processing of a body sealing defect early warning strategy, including the following steps:
(3-2.1) judging whether the density of the SF6 gas is not less than an alarm value, if so, continuing to the step (3-2.2); otherwise, continuing the step (3-2.3);
(3-2.2) judging whether a leakage point is detected, if so, giving a red early warning, immediately supplementing air, stopping power for maintenance as soon as possible, and strengthening routing inspection before power failure; otherwise, sending out a yellow early warning, immediately supplementing air, and continuously tracking and searching for a missing point;
(3-2.3) judging whether a leakage point is detected, if so, giving a red early warning, immediately supplementing air, stopping power for maintenance as soon as possible, and strengthening routing inspection before power failure; otherwise, continuing the step (3-2.4);
(3-2.4) judging whether the air supplementing frequency is more than 2, if so, sending out a yellow early warning, continuously tracking and searching for a missing point; otherwise, a blue early warning is sent out, and the SF6 gas density variation trend is continuously tracked and noted.
Preferably, the state information quantity includes an ultraviolet discharge state, a bushing creepage ratio, an external insulation damage degree and a voltage-sharing component damage degree, and the multi-state quantity early warning processing in the step (3) includes processing of an external discharge defect early warning strategy, and includes the following steps:
(3-3.1) judging whether ultraviolet discharge is found, if so, giving a red early warning, stopping power for maintenance as soon as possible, and strengthening inspection before power failure; otherwise, continuing the step (3-3.2);
(3-3.2) judging whether the creepage specific distance of the sleeve meets the requirement, if so, continuing the step (3-3.3); otherwise, sending out a yellow early warning, arranging electrified cleaning or power failure treatment, and strengthening routing inspection before power failure;
(3-3.3) judging whether the damage degree of the external insulation or the damage degree of the voltage equalizing part is serious damage, if so, giving out a yellow early warning to strengthen routing inspection, and performing power failure treatment as soon as possible; otherwise, a blue early warning is sent out, inspection is enhanced, and the change of the damage trend is tracked.
The system for realizing the active early warning function based on the state information quantity of the circuit breaker by using the method is mainly characterized by comprising the following steps:
the circuit breaker active early warning module is arranged in a safety IV area of the power system and used for acquiring state information representing the circuit breaker;
the early warning program carries out single state quantity early warning processing or multi-state quantity early warning processing according to the state information quantity of the characteristic breaker during operation, and specifically carries out the following steps:
(1) acquiring state information quantity through various information representing the circuit breaker, and forming a state information base;
(2) judging whether the state information quantity exceeds the early warning rule required value of the single state quantity, if so, sending out a red early warning by the system; otherwise, continuing the step (3);
(3) judging whether the state information quantity exceeds the early warning rule requirement value of the multi-state comprehensive quantity, if so, performing corresponding multi-state quantity early warning processing according to the state information quantity; otherwise, the system is in a normal state.
Preferably, the system further comprises a position service host, an inspection host, a video monitoring host, a main equipment centralized monitoring module and an auxiliary equipment centralized monitoring module, wherein the position service host, the inspection host and the video monitoring host are both located at a station end, and the main equipment centralized monitoring module and the auxiliary equipment centralized monitoring module are both located at a city end and are connected with the circuit breaker active early warning module through a forward isolating device.
Preferably, the state information includes a hot spot temperature, an ambient temperature, a normal heating temperature, an interphase temperature difference, and a relative temperature difference, and the multi-state warning processing in step (3) includes processing of an overheating defect warning policy, including the following steps:
(3-1.1) judging whether the temperature of the hot spot is not less than 110 ℃, if so, giving a red early warning, stopping power for maintenance as soon as possible, and strengthening routing inspection before power failure; otherwise, continuing the step (3-1.2);
(3-1.2) judging whether the hot spot temperature is higher than 80 ℃, and if so, performing early warning treatment according to the auxiliary state quantity environment temperature, the normal heating temperature and the relative temperature difference; otherwise, early warning processing is carried out according to the auxiliary state quantity environment temperature, the normal heating temperature, the temperature difference and the relative temperature difference.
Preferably, the early warning processing is performed in the step (3-1.2) according to the auxiliary state quantity environment temperature, the normal heating temperature and the relative temperature difference, and the method specifically comprises the following steps:
(3-1.2.1a) judging whether the relative temperature difference is not less than 95%, if so, giving a red early warning, stopping power for maintenance as soon as possible, and strengthening inspection before power failure; otherwise, a yellow early warning is sent out, and the tracking and the inspection enhancement are continuously carried out.
Preferably, the step (3-1.2) of performing early warning processing according to the auxiliary state quantity environment temperature, the normal heating temperature, the temperature difference and the relative temperature difference specifically comprises the following steps:
(3-1.2.1b) judging whether the relative temperature difference is not less than 95%, if so, giving a red early warning, stopping power for maintenance as soon as possible, and strengthening inspection before power failure; otherwise, continuing the step (3-1.2.2 b);
(3-1.2.2b) judging whether the relative temperature difference is not less than 80%, if so, sending out yellow early warning, continuously tracking and enhancing inspection; otherwise, a blue early warning is sent out, and the hot spot temperature change trend is continuously tracked and noted.
Preferably, the state information includes SF6 gas density, gas leakage condition and annual gas supply frequency, and the multi-state quantity early warning processing in step (3) includes processing of a body sealing defect early warning strategy, including the following steps:
(3-2.1) judging whether the density of the SF6 gas is not less than an alarm value, if so, continuing to the step (3-2.2); otherwise, continuing the step (3-2.3);
(3-2.2) judging whether a leakage point is detected, if so, giving a red early warning, immediately supplementing air, stopping power for maintenance as soon as possible, and strengthening routing inspection before power failure; otherwise, sending out a yellow early warning, immediately supplementing air, and continuously tracking and searching for a missing point;
(3-2.3) judging whether a leakage point is detected, if so, giving a red early warning, immediately supplementing air, stopping power for maintenance as soon as possible, and strengthening routing inspection before power failure; otherwise, continuing the step (3-2.4);
(3-2.4) judging whether the air supplementing frequency is more than 2, if so, sending out a yellow early warning, continuously tracking and searching for a missing point; otherwise, a blue early warning is sent out, and the SF6 gas density variation trend is continuously tracked and noted.
Preferably, the state information quantity includes an ultraviolet discharge state, a bushing creepage ratio, an external insulation damage degree and a voltage-sharing component damage degree, and the multi-state quantity early warning processing in the step (3) includes processing of an external discharge defect early warning strategy, and includes the following steps:
(3-3.1) judging whether ultraviolet discharge is found, if so, giving a red early warning, stopping power for maintenance as soon as possible, and strengthening inspection before power failure; otherwise, continuing the step (3-3.2);
(3-3.2) judging whether the creepage specific distance of the sleeve meets the requirement, if so, continuing the step (3-3.3); otherwise, sending out a yellow early warning, arranging electrified cleaning or power failure treatment, and strengthening routing inspection before power failure;
(3-3.3) judging whether the damage degree of the external insulation or the damage degree of the voltage equalizing part is serious damage, if so, giving out a yellow early warning to strengthen routing inspection, and performing power failure treatment as soon as possible; otherwise, a blue early warning is sent out, inspection is enhanced, and the change of the damage trend is tracked.
By adopting the method and the system for realizing the active early warning processing based on the state information quantity of the circuit breaker, the system provided by the application accesses various circuit breaker equipment data through a plurality of subsystems. The existing system only has the capability of analyzing a certain type of data. According to the invention, the operation state of the circuit breaker equipment is evaluated by accessing the data of the multi-source heterogeneous circuit breaker and utilizing the circuit breaker active early warning algorithm integrating the single state quantity and the integrated state quantity, so that the operation and maintenance personnel are assisted to make decisions, and the health level of the equipment is improved.
Drawings
Fig. 1 is a flowchart of a method for implementing active warning processing based on the state information amount of the circuit breaker according to the present invention.
Fig. 2 is a schematic structural diagram of a system for implementing an active warning function based on the state information amount of the circuit breaker according to the present invention.
Detailed Description
In order to more clearly describe the technical contents of the present invention, the following further description is given in conjunction with specific embodiments.
As shown in fig. 1, according to the method for implementing active early warning processing based on the state information quantity of the circuit breaker, the early warning levels are red early warning, yellow early warning and blue early warning in turn from large to small according to the severity and the emergency degree of the influence on the safe operation of equipment, and the method comprises the following steps:
(1) acquiring state information quantity through various information representing the circuit breaker, and forming a state information base;
(2) judging whether the state information quantity exceeds the early warning rule required value of the single state quantity, if so, sending out a red early warning by the system; otherwise, continuing the step (3);
(3) judging whether the state information quantity exceeds the early warning rule requirement value of the multi-state comprehensive quantity, if so, performing corresponding multi-state quantity early warning processing according to the state information quantity; otherwise, the system is in a normal state.
The multi-state quantity early warning processing in the step (3) comprises processing of an overheating defect early warning strategy, and comprises the following steps:
(3-1.1) judging whether the temperature of the hot spot is not less than 110 ℃, if so, giving a red early warning, stopping power for maintenance as soon as possible, and strengthening routing inspection before power failure; otherwise, continuing the step (3-1.2);
(3-1.2) judging whether the hot spot temperature is higher than 80 ℃, and if so, performing early warning treatment according to the auxiliary state quantity environment temperature, the normal heating temperature and the relative temperature difference; otherwise, carrying out early warning treatment according to the auxiliary state quantity environment temperature, the normal heating temperature, the temperature difference and the relative temperature difference;
(3-1.2.1a) judging whether the relative temperature difference is not less than 95%, if so, giving a red early warning, stopping power for maintenance as soon as possible, and strengthening inspection before power failure; otherwise, sending out a yellow early warning, continuously tracking and enhancing the inspection;
(3-1.2.1b) judging whether the relative temperature difference is not less than 95%, if so, giving a red early warning, stopping power for maintenance as soon as possible, and strengthening inspection before power failure; otherwise, continuing the step (3-1.2.2 b);
(3-1.2.2b) judging whether the relative temperature difference is not less than 80%, if so, sending out yellow early warning, continuously tracking and enhancing inspection; otherwise, a blue early warning is sent out, and the hot spot temperature change trend is continuously tracked and noted.
The multi-state quantity early warning processing in the step (3) comprises processing of a body sealing defect early warning strategy, and comprises the following steps:
(3-2.1) judging whether the density of the SF6 gas is not less than an alarm value, if so, continuing to the step (3-2.2); otherwise, continuing the step (3-2.3);
(3-2.2) judging whether a leakage point is detected, if so, giving a red early warning, immediately supplementing air, stopping power for maintenance as soon as possible, and strengthening routing inspection before power failure; otherwise, sending out a yellow early warning, immediately supplementing air, and continuously tracking and searching for a missing point;
(3-2.3) judging whether a leakage point is detected, if so, giving a red early warning, immediately supplementing air, stopping power for maintenance as soon as possible, and strengthening routing inspection before power failure; otherwise, continuing the step (3-2.4);
(3-2.4) judging whether the air supplementing frequency is more than 2, if so, sending out a yellow early warning, continuously tracking and searching for a missing point; otherwise, a blue early warning is sent out, and the SF6 gas density variation trend is continuously tracked and noted.
The multi-state quantity early warning processing in the step (3) comprises processing of an external discharge defect early warning strategy, and comprises the following steps:
(3-3.1) judging whether ultraviolet discharge is found, if so, giving a red early warning, stopping power for maintenance as soon as possible, and strengthening inspection before power failure; otherwise, continuing the step (3-3.2);
(3-3.2) judging whether the creepage specific distance of the sleeve meets the requirement, if so, continuing the step (3-3.3); otherwise, sending out a yellow early warning, arranging electrified cleaning or power failure treatment, and strengthening routing inspection before power failure;
(3-3.3) judging whether the damage degree of the external insulation or the damage degree of the voltage equalizing part is serious damage, if so, giving out a yellow early warning to strengthen routing inspection, and performing power failure treatment as soon as possible; otherwise, a blue early warning is sent out, inspection is enhanced, and the change of the damage trend is tracked.
As shown in fig. 2, the system for implementing active warning function based on the state information amount of the circuit breaker by using the above method of the present invention includes
The circuit breaker active early warning module is arranged in a safety IV area of the power system and used for acquiring state information representing the circuit breaker;
the early warning program carries out single state quantity early warning processing or multi-state quantity early warning processing according to the state information quantity of the characteristic breaker during operation, and specifically carries out the following steps:
(1) acquiring state information quantity through various information representing the circuit breaker, and forming a state information base;
(2) judging whether the state information quantity exceeds the early warning rule required value of the single state quantity, if so, sending out a red early warning by the system; otherwise, continuing the step (3);
(3) judging whether the state information quantity exceeds the early warning rule requirement value of the multi-state comprehensive quantity, if so, performing corresponding multi-state quantity early warning processing according to the state information quantity; otherwise, the system is in a normal state.
The multi-state quantity early warning processing in the step (3) comprises processing of an overheating defect early warning strategy, and comprises the following steps:
(3-1.1) judging whether the temperature of the hot spot is not less than 110 ℃, if so, giving a red early warning, stopping power for maintenance as soon as possible, and strengthening routing inspection before power failure; otherwise, continuing the step (3-1.2);
(3-1.2) judging whether the hot spot temperature is higher than 80 ℃, and if so, performing early warning treatment according to the auxiliary state quantity environment temperature, the normal heating temperature and the relative temperature difference; otherwise, early warning processing is carried out according to the auxiliary state quantity environment temperature, the normal heating temperature, the temperature difference and the relative temperature difference.
(3-1.2.1a) judging whether the relative temperature difference is not less than 95%, if so, giving a red early warning, stopping power for maintenance as soon as possible, and strengthening inspection before power failure; otherwise, a yellow early warning is sent out, and the tracking and the inspection enhancement are continuously carried out.
(3-1.2.1b) judging whether the relative temperature difference is not less than 95%, if so, giving a red early warning, stopping power for maintenance as soon as possible, and strengthening inspection before power failure; otherwise, continuing the step (3-1.2.2 b);
(3-1.2.2b) judging whether the relative temperature difference is not less than 80%, if so, sending out yellow early warning, continuously tracking and enhancing inspection; otherwise, a blue early warning is sent out, and the hot spot temperature change trend is continuously tracked and noted.
The multi-state quantity early warning processing in the step (3) comprises processing of a body sealing defect early warning strategy, and comprises the following steps:
(3-2.1) judging whether the density of the SF6 gas is not less than an alarm value, if so, continuing to the step (3-2.2); otherwise, continuing the step (3-2.3);
(3-2.2) judging whether a leakage point is detected, if so, giving a red early warning, immediately supplementing air, stopping power for maintenance as soon as possible, and strengthening routing inspection before power failure; otherwise, sending out a yellow early warning, immediately supplementing air, and continuously tracking and searching for a missing point;
(3-2.3) judging whether a leakage point is detected, if so, giving a red early warning, immediately supplementing air, stopping power for maintenance as soon as possible, and strengthening routing inspection before power failure; otherwise, continuing the step (3-2.4);
(3-2.4) judging whether the air supplementing frequency is more than 2, if so, sending out a yellow early warning, continuously tracking and searching for a missing point; otherwise, a blue early warning is sent out, and the SF6 gas density variation trend is continuously tracked and noted.
The multi-state quantity early warning processing in the step (3) comprises processing of an external discharge defect early warning strategy, and comprises the following steps:
(3-3.1) judging whether ultraviolet discharge is found, if so, giving a red early warning, stopping power for maintenance as soon as possible, and strengthening inspection before power failure; otherwise, continuing the step (3-3.2);
(3-3.2) judging whether the creepage specific distance of the sleeve meets the requirement, if so, continuing the step (3-3.3); otherwise, sending out a yellow early warning, arranging electrified cleaning or power failure treatment, and strengthening routing inspection before power failure;
(3-3.3) judging whether the damage degree of the external insulation or the damage degree of the voltage equalizing part is serious damage, if so, giving out a yellow early warning to strengthen routing inspection, and performing power failure treatment as soon as possible; otherwise, a blue early warning is sent out, inspection is enhanced, and the change of the damage trend is tracked.
As a preferred embodiment of the present invention, the system further includes a location service host, an inspection host, a video monitoring host, a main device centralized monitoring module, and an auxiliary device centralized monitoring module, wherein the location service host, the inspection host, and the video monitoring host are all located at the station end, and the main device centralized monitoring module and the auxiliary device centralized monitoring module are all located at the city end and are connected to the active early warning module of the circuit breaker through a forward isolation device.
In the specific implementation manner of the invention, in the prior art, the running state of the equipment is analyzed only through a certain type of state quantity of the circuit breaker, the incidence relation among various types of state quantities is not analyzed, and the various types of state quantities are not comprehensively analyzed, so that only certain faults of the equipment can be analyzed.
The circuit breaker multi-state comprehensive early warning method and the circuit breaker multi-state comprehensive early warning system can analyze the single state quantity of the circuit breaker equipment, provide the circuit breaker multi-state quantity comprehensive early warning model algorithm, early warn in advance before the circuit breaker breaks down, and assist operation and maintenance personnel to make emergency, detection or maintenance decisions.
The proposal mainly describes a judgment method for judging the active early warning of the breaker of the key equipment of the transformer substation, and helps the operation and maintenance personnel of the transformer substation to find the problem of the breaker in advance and process the problem.
Firstly, the system composition is as shown in fig. 2:
(1) the circuit breaker active early warning system is deployed in a power system safety IV area.
(2) The active early warning system of the circuit breaker obtains information representing the state of the circuit breaker through a position service host, an inspection host and a video monitoring host of an access station end, and a main control system and an auxiliary control system of a city end.
(3) And the main control system and the auxiliary control system of the city end are connected into the active early warning system of the circuit breaker through the forward isolation device.
The active early warning judgment method for the circuit breaker directly or indirectly represents various information of the transformer and comprises the following data:
(1) operation information: the operation information of the equipment mainly comprises: recording information of the running condition of the equipment, recording the defects and the abnormalities of the equipment over the years, voltage and current information and the like.
(2) And (3) routing inspection information: the inspection data of the equipment mainly comprises: infrared, oil level inspection and the like.
(3) Maintenance data: various detection and defect information of the equipment.
(4) And (3) online monitoring data: the gas concentration, the pressure, the temperature and other information obtained by various online monitoring devices.
Thirdly, various information data sources directly or indirectly representing the circuit breaker are as follows:
fourthly, as shown in fig. 1, the active early warning method of the circuit breaker comprises the following steps:
(1) breaker early warning level classification
The active early warning level of the circuit breaker is divided into three levels on the whole, the active early warning signal is divided into three types of blue early warning, yellow early warning and red early warning according to the severity and the emergency degree of the influence on the safe operation of equipment, and different emergency, detection and maintenance strategies are adopted according to different early warning levels.
a. Red early warning: indicating that the state quantity of the equipment exceeds the relevant standard limit value or the change trend is obvious. The equipment may have defects and may develop into faults, and corresponding measures are urgently needed.
b. Yellow early warning: the change trend of the state quantity of the equipment is shown to be developed towards the standard limit value, but the change trend does not exceed the standard limit value. The equipment may present potential hazards requiring intensive monitoring or further analytical evaluation.
c. Blue early warning: the abnormal state quantity of the single or partial state quantity of the equipment is represented, the operation of the equipment is not influenced for the moment, and the equipment is in a state of only needing attention or tracking analysis.
(2) Early warning strategy
The active early warning mode of the circuit breaker is divided into single early warning of single state quantity and comprehensive early warning of multiple state quantities.
The state early warning process is set as follows: and if the state information quantity exceeds the single state quantity early warning rule requirement value, performing red early warning, and if the state information quantity does not exceed the single state quantity early warning rule requirement value, performing multi-state comprehensive early warning.
a. Single early warning strategy for circuit breaker
b. Overheating defect early warning strategy
The hot spot temperature (T1) is selected as a key state quantity, and the environment temperature (T0), the normal heating temperature (T2), the phase-to-phase temperature difference (delta T) and the relative temperature difference (delta) are selected as auxiliary state quantities.
The early warning rules are specified as follows:
1) when the temperature T1 is more than or equal to 110 ℃, red warning is carried out, the operation and inspection strategy is power failure maintenance as soon as possible, and inspection is strengthened before power failure.
2) When the temperature is 110 ℃ and T1 is more than 80 ℃, the auxiliary parameters of the environment temperature (T0), the normal heating temperature (T2) and the relative temperature difference (delta) are referred to.
When delta is larger than or equal to 95%, red warning is carried out, the operation and inspection strategy is to carry out power failure maintenance as soon as possible, and routing inspection is enhanced before power failure;
when delta is less than 95%, yellow early warning is carried out, the operation and inspection strategy is continuous tracking and enhanced inspection, and power is cut off for treatment if necessary.
3) When the temperature is 80 ℃ and more than or equal to T1 > (T0+10 ℃), the reference auxiliary parameter environmental temperature (T0), the normal heating temperature (T2), the temperature difference (delta T) and the relative temperature difference (delta) are determined.
When delta is larger than or equal to 95%, red warning is carried out, the operation and inspection strategy is to carry out power failure maintenance as soon as possible, and routing inspection is enhanced before power failure;
when the delta is more than 95% and is more than or equal to 80%, yellow early warning is carried out, the operation and inspection strategy is continuous tracking and enhanced inspection, and power is cut off for treatment if necessary;
when the delta is less than 80%, blue warning is carried out, the operation and inspection strategy is continuous tracking, and the change trend of the hot spot temperature is concerned.
c. Body seal defect early warning and strategy
SF6 gas density is selected as a key state quantity, and the air leakage condition and the annual air supplement times are selected as auxiliary state quantities.
The early warning rules are specified as follows:
1) and when the SF6 gas density is less than or equal to the alarm value, referring to the air leakage condition of the auxiliary parameter.
When a leakage point is detected, red early warning is carried out, the operation and inspection strategy is to supplement air immediately, power failure maintenance is arranged as soon as possible, and inspection is enhanced before power failure;
when the leakage point is not detected, yellow early warning is carried out, the operation and detection strategy is to supplement air immediately, track continuously, search for the leakage point and arrange power failure maintenance if necessary.
2) And when the SF6 gas density is larger than the alarm value and no leakage point is detected, the auxiliary parameter annual gas supplementing times are referred.
When the number of air supplement times in the year is more than 2, yellow early warning is carried out, the operation and inspection strategy is continuous tracking, missing points are searched, and power failure maintenance is arranged if necessary;
when the number of air supplement times is less than or equal to 2 and is more than 0, blue early warning is carried out, the operation and inspection strategy is continuous tracking, and the SF6 gas density change trend is concerned.
d. External discharge defect early warning and strategy
And selecting ultraviolet discharge as a key state quantity, and using a creepage specific distance, external insulation damage and voltage-sharing component damage of the sleeve as auxiliary state quantities.
The early warning rules are specified as follows:
1) when ultraviolet discharge is found, red early warning is carried out, the operation and inspection strategy is to carry out power failure maintenance as soon as possible, and routing inspection is enhanced before power failure.
2) And when ultraviolet discharge is not found, the creep ratio of the auxiliary parameter sleeve, the damage degree of the external insulation and the damage degree of the voltage equalizing part are referenced.
When the creepage specific distance of the sleeve meets the requirement and the damage degree of the external insulation or the voltage equalizing part is slight or no damage, blue early warning is carried out, and the operation and inspection strategy is to enhance inspection and track the change of the damage trend;
when the creepage ratio distance of the sleeve meets the requirement and the external insulation is damaged or the damage degree of the voltage equalizing part is seriously damaged, yellow early warning is carried out, the operation and inspection strategy is to strengthen inspection, and the power failure is processed as soon as possible;
when the creepage ratio distance of the sleeve does not meet the requirement, yellow early warning is carried out, the operation and inspection strategy is to arrange electrified cleaning or power failure treatment as soon as possible, and routing inspection is enhanced before power failure.
By adopting the method and the system for realizing the active early warning processing based on the state information quantity of the circuit breaker, the system provided by the application accesses various circuit breaker equipment data through a plurality of subsystems. The existing system only has the capability of analyzing a certain type of data. According to the invention, the operation state of the circuit breaker equipment is evaluated by accessing the data of the multi-source heterogeneous circuit breaker and utilizing the circuit breaker active early warning algorithm integrating the single state quantity and the integrated state quantity, so that the operation and maintenance personnel are assisted to make decisions, and the health level of the equipment is improved.
In this specification, the invention has been described with reference to specific embodiments thereof. It will, however, be evident that various modifications and changes may be made thereto without departing from the broader spirit and scope of the invention. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
Claims (11)
1. A method for realizing active early warning processing based on state information quantity of a circuit breaker is characterized in that early warning levels are red early warning, yellow early warning and blue early warning in sequence from large to small according to severity and emergency degree of influence on safe operation of equipment, and the method comprises the following steps:
(1) acquiring state information quantity through various information representing the circuit breaker, and forming a state information base;
(2) judging whether the state information quantity exceeds the early warning rule required value of the single state quantity, if so, sending out a red early warning by the system; otherwise, continuing the step (3);
(3) judging whether the state information quantity exceeds the early warning rule requirement value of the multi-state comprehensive quantity, if so, performing corresponding multi-state quantity early warning processing according to the state information quantity; otherwise, the system is in a normal state;
the state information quantity comprises hot spot temperature, environment temperature, normal heating temperature, interphase temperature difference and relative temperature difference, the multi-state quantity early warning treatment of the step (3) comprises the treatment of an overheating defect early warning strategy, and the method comprises the following steps:
(3-1.1) judging whether the temperature of the hot spot is not less than 110 ℃, if so, giving a red early warning, stopping power for maintenance as soon as possible, and strengthening routing inspection before power failure; otherwise, continuing the step (3-1.2);
(3-1.2) judging whether the hot spot temperature is higher than 80 ℃, and if so, performing early warning treatment according to the auxiliary state quantity environment temperature, the normal heating temperature and the relative temperature difference; otherwise, early warning processing is carried out according to the auxiliary state quantity environment temperature, the normal heating temperature, the temperature difference and the relative temperature difference.
2. The method for realizing active early warning processing based on the state information quantity of the circuit breaker according to claim 1, wherein the early warning processing is carried out according to the auxiliary state quantity environment temperature, the normal heating temperature and the relative temperature difference in the step (3-1.2), and the method specifically comprises the following steps:
(3-1.2.1a) judging whether the relative temperature difference is not less than 95%, if so, giving a red early warning, stopping power for maintenance as soon as possible, and strengthening inspection before power failure; otherwise, a yellow early warning is sent out, and the tracking and the inspection enhancement are continuously carried out.
3. The method for realizing active early warning processing based on the state information quantity of the circuit breaker according to claim 1, wherein the early warning processing is carried out in the step (3-1.2) according to the auxiliary state quantity environment temperature, the normal heating temperature, the temperature difference and the relative temperature difference, and the method specifically comprises the following steps:
(3-1.2.1b) judging whether the relative temperature difference is not less than 95%, if so, giving a red early warning, stopping power for maintenance as soon as possible, and strengthening inspection before power failure; otherwise, continuing the step (3-1.2.2 b);
(3-1.2.2b) judging whether the relative temperature difference is not less than 80%, if so, sending out yellow early warning, continuously tracking and enhancing inspection; otherwise, a blue early warning is sent out, and the hot spot temperature change trend is continuously tracked and noted.
4. The method for implementing active pre-warning processing based on the state information quantity of the circuit breaker according to claim 1, wherein the state information quantity comprises SF6 gas density, gas leakage condition and annual gas supply times, and the multi-state quantity pre-warning processing of the step (3) comprises a processing of a body seal defect pre-warning strategy, and comprises the following steps:
(3-2.1) judging whether the density of the SF6 gas is not less than an alarm value, if so, continuing to the step (3-2.2); otherwise, continuing the step (3-2.3);
(3-2.2) judging whether a leakage point is detected, if so, giving a red early warning, immediately supplementing air, stopping power for maintenance as soon as possible, and strengthening routing inspection before power failure; otherwise, sending out a yellow early warning, immediately supplementing air, and continuously tracking and searching for a missing point;
(3-2.3) judging whether a leakage point is detected, if so, giving a red early warning, immediately supplementing air, stopping power for maintenance as soon as possible, and strengthening routing inspection before power failure; otherwise, continuing the step (3-2.4);
(3-2.4) judging whether the air supplementing frequency is more than 2, if so, sending out a yellow early warning, continuously tracking and searching for a missing point; otherwise, a blue early warning is sent out, and the SF6 gas density variation trend is continuously tracked and noted.
5. The method for implementing active pre-warning processing based on the state information quantity of the circuit breaker according to claim 1, wherein the state information quantity comprises an ultraviolet discharge condition, a bushing creepage ratio, an external insulation damage degree and a voltage-sharing component damage degree, and the multi-state quantity pre-warning processing of the step (3) comprises processing of an external discharge defect pre-warning strategy, and comprises the following steps:
(3-3.1) judging whether ultraviolet discharge is found, if so, giving a red early warning, stopping power for maintenance as soon as possible, and strengthening inspection before power failure; otherwise, continuing the step (3-3.2);
(3-3.2) judging whether the creepage specific distance of the sleeve meets the requirement, if so, continuing the step (3-3.3); otherwise, sending out a yellow early warning, arranging electrified cleaning or power failure treatment, and strengthening routing inspection before power failure;
(3-3.3) judging whether the damage degree of the external insulation or the damage degree of the voltage equalizing part is serious damage, if so, giving out a yellow early warning to strengthen routing inspection, and performing power failure treatment as soon as possible; otherwise, a blue early warning is sent out, inspection is enhanced, and the change of the damage trend is tracked.
6. The utility model provides a system for realize initiative early warning function based on state information volume of circuit breaker which characterized in that, the system include:
the circuit breaker active early warning module is arranged in a safety IV area of the power system and used for acquiring state information representing the circuit breaker;
the early warning program carries out single state quantity early warning processing or multi-state quantity early warning processing according to the state information quantity of the characteristic breaker during operation, and specifically carries out the following steps:
(1) acquiring state information quantity through various information representing the circuit breaker, and forming a state information base;
(2) judging whether the state information quantity exceeds the early warning rule required value of the single state quantity, if so, sending out a red early warning by the system; otherwise, continuing the step (3);
(3) judging whether the state information quantity exceeds the early warning rule requirement value of the multi-state comprehensive quantity, if so, performing corresponding multi-state quantity early warning processing according to the state information quantity; otherwise, the system is in a normal state;
the state information quantity comprises hot spot temperature, environment temperature, normal heating temperature, interphase temperature difference and relative temperature difference, the multi-state quantity early warning treatment of the step (3) comprises the treatment of an overheating defect early warning strategy, and the method comprises the following steps:
(3-1.1) judging whether the temperature of the hot spot is not less than 110 ℃, if so, giving a red early warning, stopping power for maintenance as soon as possible, and strengthening routing inspection before power failure; otherwise, continuing the step (3-1.2);
(3-1.2) judging whether the hot spot temperature is higher than 80 ℃, and if so, performing early warning treatment according to the auxiliary state quantity environment temperature, the normal heating temperature and the relative temperature difference; otherwise, early warning processing is carried out according to the auxiliary state quantity environment temperature, the normal heating temperature, the temperature difference and the relative temperature difference.
7. The system for realizing the active early warning function based on the state information quantity of the circuit breaker according to claim 6, further comprising a position service host, an inspection host, a video monitoring host, a main equipment centralized monitoring module and an auxiliary equipment centralized monitoring module, wherein the position service host, the inspection host and the video monitoring host are all located at a station end, and the main equipment centralized monitoring module and the auxiliary equipment centralized monitoring module are all located at a city end and are connected with the circuit breaker active early warning module through a forward isolating device.
8. The system for realizing the active early warning function based on the state information quantity of the circuit breaker according to claim 6, wherein the early warning processing is performed in the step (3-1.2) according to the auxiliary state quantity environment temperature, the normal heating temperature and the relative temperature difference, and the method specifically comprises the following steps:
(3-1.2.1a) judging whether the relative temperature difference is not less than 95%, if so, giving a red early warning, stopping power for maintenance as soon as possible, and strengthening inspection before power failure; otherwise, a yellow early warning is sent out, and the tracking and the inspection enhancement are continuously carried out.
9. The system for realizing the active early warning function based on the state information quantity of the circuit breaker according to claim 6, wherein the early warning processing is performed in the step (3-1.2) according to the auxiliary state quantity environment temperature, the normal heating temperature, the temperature difference and the relative temperature difference, and the method specifically comprises the following steps:
(3-1.2.1b) judging whether the relative temperature difference is not less than 95%, if so, giving a red early warning, stopping power for maintenance as soon as possible, and strengthening inspection before power failure; otherwise, continuing the step (3-1.2.2 b);
(3-1.2.2b) judging whether the relative temperature difference is not less than 80%, if so, sending out yellow early warning, continuously tracking and enhancing inspection; otherwise, a blue early warning is sent out, and the hot spot temperature change trend is continuously tracked and noted.
10. The system for realizing active warning function based on breaker state information quantity according to claim 6, wherein the state information quantity comprises SF6 gas density, gas leakage condition and annual gas supply times, the multi-state quantity warning processing of the step (3) comprises the processing of body sealing defect warning strategy, and the method comprises the following steps:
(3-2.1) judging whether the density of the SF6 gas is not less than an alarm value, if so, continuing to the step (3-2.2); otherwise, continuing the step (3-2.3);
(3-2.2) judging whether a leakage point is detected, if so, giving a red early warning, immediately supplementing air, stopping power for maintenance as soon as possible, and strengthening routing inspection before power failure; otherwise, sending out a yellow early warning, immediately supplementing air, and continuously tracking and searching for a missing point;
(3-2.3) judging whether a leakage point is detected, if so, giving a red early warning, immediately supplementing air, stopping power for maintenance as soon as possible, and strengthening routing inspection before power failure; otherwise, continuing the step (3-2.4);
(3-2.4) judging whether the air supplementing frequency is more than 2, if so, sending out a yellow early warning, continuously tracking and searching for a missing point; otherwise, a blue early warning is sent out, and the SF6 gas density variation trend is continuously tracked and noted.
11. The system for realizing the active early warning function based on the state information quantity of the circuit breaker according to claim 6, wherein the state information quantity comprises an ultraviolet discharge condition, a bushing creepage ratio distance, an external insulation damage degree and a voltage-sharing component damage degree, and the multi-state quantity early warning processing of the step (3) comprises processing of an external discharge defect early warning strategy, and comprises the following steps:
(3-3.1) judging whether ultraviolet discharge is found, if so, giving a red early warning, stopping power for maintenance as soon as possible, and strengthening inspection before power failure; otherwise, continuing the step (3-3.2);
(3-3.2) judging whether the creepage specific distance of the sleeve meets the requirement, if so, continuing the step (3-3.3); otherwise, sending out a yellow early warning, arranging electrified cleaning or power failure treatment, and strengthening routing inspection before power failure;
(3-3.3) judging whether the damage degree of the external insulation or the damage degree of the voltage equalizing part is serious damage, if so, giving out a yellow early warning to strengthen routing inspection, and performing power failure treatment as soon as possible; otherwise, a blue early warning is sent out, inspection is enhanced, and the change of the damage trend is tracked.
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| CN113643521A (en) * | 2021-08-12 | 2021-11-12 | 北京智盟信通科技有限公司 | Equipment state early warning method and device for power equipment and electronic equipment |
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| CN202974334U (en) * | 2012-12-04 | 2013-06-05 | 河南省电力公司焦作供电公司 | Integrated on-line monitoring device of SF6 gas |
| CN103744018A (en) * | 2014-01-16 | 2014-04-23 | 常州市明及电气技术开发有限公司 | On-line monitoring system aiming at high-voltage circuit breaker |
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| CN104500968A (en) * | 2014-11-27 | 2015-04-08 | 国网河南省电力公司平顶山供电公司 | SF6 circuit breaker remote control online gas-replenishing and gas-bleeding system |
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| CN107102259A (en) * | 2017-04-25 | 2017-08-29 | 国电南瑞科技股份有限公司 | A kind of State-Inspect of High-Voltage Circuit method and system of Multi-information acquisition |
| CN107515372A (en) * | 2017-08-21 | 2017-12-26 | 国网上海市电力公司 | A kind of switchgear defect intelligent detection and analysis system |
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